What was found in ZIP 18101
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 4680 µg/L 47% of the EPA limit 10000 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Fluoride | 577.5 µg/L 14% of the EPA limit 4000 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Copper | 324.8 µg/L 25% of the EPA limit 1300 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| TTHM | 49.45 µg/L 62% of the EPA limit 80 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Barium | 38 µg/L 1.9% of the EPA limit 2000 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Chloroform | 25.8 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 25 µg/L 42% of the EPA limit 60 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 15.575 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 13.035 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Lead | 11.16 µg/L 74% of the EPA limit 15 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 10.955 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 10.45 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Selenium | 3.91 µg/L 7.8% of the EPA limit 50 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Chromium | 3.63 µg/L 3.6% of the EPA limit 100 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 2.8675 µg/L 57% of the EPA limit 5 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Bromoform | 2.8075 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.914 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Arsenic | 0.7645 µg/L 7.6% of the EPA limit 10 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Mercury | 0.2000 µg/L 10% of the EPA limit 2 µg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0075 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0070 mg/L 47% of the EPA limit 0.0150 mg/L Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2025 | 1/1 | LCR |
| Pfhxa | 0.0064 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2023 | 1/1 | UCMR-5 |
| PFOS | 0.0044 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2023 | 1/1 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Main supplier: LCA ALLENTOWN DIVISION · 118,000 people · 2023 | 1/1 | UCMR-5 |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
Water suppliers serving ZIP 18101
| Supplier | State | Population served |
|---|---|---|
| LCA ALLENTOWN DIVISION | PA | 118,000 |
Frequently asked questions about ZIP 18101 tap water
Is the tap water in ZIP 18101 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 18101. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 18101?
1 public water supplier report EPA drinking-water monitoring for ZIP 18101. Each is listed above with its population served.
What contaminants are in ZIP 18101's water?
EPA monitoring detected Nitrate, Fluoride, Copper, TTHM, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.